This year's Cyber Monday sales are expected to top 2011, with shoppers expected to spend $1.5 billion over the Internet.

To maximize your online shopping experience, there are websites and apps that help find the best deals, including InvisibleHand.com, Price Grabber, and Shop Savvy.

"These are sites and apps that can help make sure you are getting the best deal or make sure that, if you see an item that you really like, it can tell you where you can get it for less," said tech expert Mario Anthony.

Experts said video games, computers, toys and clothing are Cyber Monday's best buys.

Consumer Reports said Cyber Monday is largely a marketing strategy, but in its latest survey, 34 percent of people said they plan to spend some time online shopping Monday. Another study by price-predicting website Decide.com found that 90 percent of the time, online purchases costs less.

Experts also said there are likely to be good deals online even after Cyber Monday, so if you don't get the chance to log on, don't sweat it.

"Scan your favorite store's website when you get to work, but don't tell your boss. Look for those great deals because they'll be there Monday and then Tuesday and Wednesday, and they'll be there all the way up until and including Christmas," said Consumer Reports spokesman Tod Marks.